diff --git a/src/corelib/mimetypes/qmimeprovider.cpp b/src/corelib/mimetypes/qmimeprovider.cpp
index 46cf6f77759..00d1f2636d4 100644
--- a/src/corelib/mimetypes/qmimeprovider.cpp
+++ b/src/corelib/mimetypes/qmimeprovider.cpp
@@ -718,10 +718,24 @@ void QMimeXMLProvider::findByMagic(const QByteArray &data, QMimeMagicResult &res
     for (const QMimeMagicRuleMatcher &matcher : std::as_const(m_magicMatchers)) {
         if (matcher.matches(data)) {
             const int priority = matcher.priority();
-            if (priority > result.accuracy) {
-                result.accuracy = priority;
-                result.candidate = matcher.mimetype();
+            if (priority < result.accuracy)
+                continue;
+            if (priority == result.accuracy) {
+                if (m_db->inherits(result.candidate, matcher.mimetype()))
+                    continue;
+
+                if (!m_db->inherits(matcher.mimetype(), result.candidate)) {
+                    // Two or more magic rules matching, both with the same priority but not
+                    // connected with one another should not happen:
+                    qWarning("QMimeXMLProvider: MimeType is ambiguous between %ls and %ls",
+                             qUtf16Printable(result.candidate),
+                             qUtf16Printable(matcher.mimetype()));
+                    continue;
+                }
             }
+
+            result.accuracy = priority;
+            result.candidate = matcher.mimetype();
         }
     }
 }
diff --git a/tests/auto/corelib/mimetypes/qmimedatabase/tst_qmimedatabase.cpp b/tests/auto/corelib/mimetypes/qmimedatabase/tst_qmimedatabase.cpp
index 8cf3e9f5ac1..70314bd29cb 100644
--- a/tests/auto/corelib/mimetypes/qmimedatabase/tst_qmimedatabase.cpp
+++ b/tests/auto/corelib/mimetypes/qmimedatabase/tst_qmimedatabase.cpp
@@ -646,6 +646,9 @@ void tst_QMimeDatabase::mimeTypeForData_data()
     else
         QTest::newRow("diff_space") << QByteArray("diff ") << "text/x-diff";
     QTest::newRow("unknown") << QByteArray("\001abc?}") << "application/octet-stream";
+    QTest::newRow("ambigous svg/xml") << QByteArray(R"(<?xml version="1.0"?>
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+</svg>)") << "image/svg+xml";
 }
 
 void tst_QMimeDatabase::mimeTypeForData()